The oblique-busting move is modeled after—you guessed it—the act of chopping wood. Which means that to do it, you’ll want to channel your inner lumberjack (or, if you’re feeling festive, your inner Christmas tree farmer) and imagine that you’re cutting down a tree. But in order to reap the full benefits—which should light your core and arms on fire—it’s important that you’ve got good form.

“A lot of things can go wrong,” says Le Sweat founder Charlee Atkins, who calls the dumbbell wood chop one of her “favorite standing core moves.” But the biggest mistake she sees people making, she says, is twisting too much in their spines, which is an easy way to get hurt.

To do it properly, you first want to make sure you have the right weight, which might be slightly lighter than your usual go-to since there are so many technical elements to think about. Then, you’ll want to articulate through your shoulders and hips so that the core can stabilize the spine, which will help you move the dumbbell across your body properly. “So when you take the heavy ‘axe’ to the top of the tree, you want to use your core to swipe it across to cut that tree down,” she says. Your feet also play a major role in this, so remember to rotate through the balls of your feet as you reach from top to bottom. If you want to amp up the move even more, you can integrate the dumbbell wood chop into a lunge, which will work nearly every muscle in your body.